Loom



Dec. 29, 1925. r

B. C.-A. VORSTER LOOM Filed April 10, 1924 Patented Dec. 29, 19.25.

UNITED v STATES PATENT OFFICE.

BASTIAAN CAREL AueusT vonsTEn, 0E AMSTERDAM, NETHERLANDS, AsSIeNon TosYNDIoATE SoLTmAN c. s., or AMSTERDAM, NETHERLANDS, CONSTITUTED BYMYSELF; GERHABD' soLTMAN, 0E LONNEKER; HUIBERT SOER, ANToN JOSEPHxoENnAAD enoND, AND CARL ADOLF ELIAS, or AMSTERDAM, NETHERLANDS.

LOOM.

Application filed April 10, 1924. Serial No. 705,681.

To all whom it may concern:

Be it known that I, BASTIAAN OAREL AU- eus'r VoRs'rnn, subject of theQueen of the Netherlands, residing at Amsterdam, Province ofNorth-Holland, Kingdom of the Netherlands, have invented certain new anduseful Improvements in or Relating to Looms, of which the following is aspecification.

In the Dutch specification Nr. 24:18? a method for continuously Weavingtextile fabrics is disclosed in which the weft thread which is suppliedfrom a stationary hank is passed by a main shuttle as two threads, oneabove the other through the lease and is locked in the selvage by meansof a tensioned anchor thread which is fed from the secondary shuttle,the latter being movable in an additional shuttle race arrangedsubstantially' at right angles to the lay of the main shuttle.

According to this specification the double weft thread is first passedover the anchor thread, which from the selvage of the fabric extends toan auxiliary shuttle or pirn, lying at the rear side of the laywhereupon the lay is moved forwards and simultaneously the auxiliarypirn is passed forwards between the two weft threads after which the laywith the main shuttle is moved backwards, the'shuttle is returned to thefeed side of the loom, the anchor thread is returned to its initialposition and the lease is changed successively.

The object of my present invention is an improved shuttle for carrying"into effect the method above referred to, such shuttle beingcharacterized in that it is provided with a slot extending through thetotal height of the body of the shuttle and substantially over the totallength thereof.

According to a further feature of the present invention the slot isarranged at the front side of the vertical longitudlnal plane ofsymmetry of the shuttle. The invention is hereinafter described withreference t the annexed drawingin which- Figure 1 shows a perspectiveview of the main lay of a loom for carrying out the method referred to;

Fi ure 2 is a plan view of theauxiliary shutte or pirn;

Figure 3 shows on an enlarged scale mechanism for operating theauxiliary shuttle;

Figures 4 and 5 show respectively a side and end elevation of one of theboxes of the auxiliary shuttle; and

F i ure 6 is a perspective view of the main cloth beam not shown. So farthe loom is completely identical to'ordinary looms.

According to the invention a second stationary shuttle race 8 isprovided, substantially at right angles to the main lay one end of saidrace being secured to the breast beam 7 and the opposite end beingsecured to a rod 9 mounted on the frame of the loom. The auxiliaryshuttle race 8 is provided with two boxes 10, 11 for the auxiliaryshuttle 12 which in Figure 2 is shown in plan view. The auxiliaryshuttle 12 contains a supply of yarn wound on a pirn 13, which throughthe medium of a disc 14 is acted upon by a spring 15 of regulabletension by means of which therotating movement of the pirn 13 andtherefore the paying-out of the thread is controlled. The auxiliaryshuttle 12 is provided with three eyelets 16, 1'7, 18 through which thethread passes to the selvage at the corresponding edge of the fabric. sAs shown in Figure 3, illustrating the means for operating the auxiliaryshuttle 12, each box 10 or 11 of'this shuttle contains a picking member19 or 20 having a slot which accommodates the upper extremities of thepicking rods 21 and 22. For

the sake of clearness the latter arenot shown I in Figure 1, but moreparticularly illustrated in Figure 3. The picking rods are pivotallyconnected at their lower ends, to a beam 23 in the frame of the loom andthey pass through slots 24, 25 in the shuttle race 8. V

The two picking rods 21 and 22 are interconnected by means of a tensionspring 26,

each ro'd being provided with a pin 27,28 co-operating with a catch 29,30 for locking and releasing the picking rods as hereinafter described.The horizontal arm of the catch 29, is provided with a projection 32 andby means of a spring 33 is connected to a fixed part of the machine. Aclownwardly projecting arm of the catch 29 is connected to a lever 35 bymeans of a chain 34 or other flexible member the said lever )GlIlgpivotally connected to the frame of the loom by a pin 36 and carrying alateral arm 37 which through the medium of a roller 38 rests against oneof two cams 40 and il keyed on the shaft 39. The roller 38 is held incontact with the periphery of the cam 40 by means of a spring 42engaging the lower arm of the lever 35, the other end of the springbeing connected to a fixed part 43. The second cam 11 in the same wayco-operates with a roller 4 1 carried by the arm 15 of a second lever 46on the opposite side of the shaft 39 such lever being pivotally mountedon av pin a7 and acted upon by a spring 48 in such a way that the rollerHis always held in contact with the eccentric 11. The upper arm of thelever 46 moreover is connected by a short chain 4.9 or the like to adownwardly projecting arm of the catch 30 mounted on the pivot 50 of therod 9. The catch 30 is also provided with a projection 51 and isnormally held down by a spring 52.

The boxes 10 and 11 of the auxiliary shuttle race 8 on one side thereofare each provided with a slot 53 (Fig. 4) through which projects a block5 1 carried by a small blade spring 55 secured to the. outer face of thebox in such a manner that the auxiliary shutter 12 is resiliently heldin the boxes. The left hand box 10 is further provided with twobeak-shaped projections 56, 57, the object of which will appear from thefollowing description of the operation of the loom, as also the objectof the projections or arms 58, 59 secured to the lower face of the mainlay 1.

The shuttle 5 shown in Fig. 6 is different from the shuttle ordinarilyused in that it is of relatively great length (say 40 cms.) and isprovided with a relatively narrow slot 60 extending through the totalheight of the body of the shuttle and substantially over the totallength thereof, such slot being preferably arranged on the front side ofthe vertical longitudinal plane of symmetry of the shuttle. Through thisslot the weft thread 61, taken from a stationary cop or hank 62 which isof relatively arbitrary dimensions, is passed, the thread preferablybeing guided by a roller 63 through the opening 6 1. It is obvious thatthe weft thread 61 may also be guided in any other way and suitabletension devices may be provided. The object of the longitudinal slot 60in the shuttle 0 will be hereinafter explained.

The operation of the loom is as follows:

The main shuttle 5 is thrown from left to right and during this movementcarries with it the weft thread 61, one end of which is locked in theleft hand selvage of-the fabric, so that when such thread reaches theother side of the loom it is double. The auxiliary shuttle 12, at thebeginning of the operation, is held in the front box 10 of the auxiliaryshuttle race 8 (Fig. whereas the pins 27, 28 of the two picking rods 21and 22 engage the locking projections 32 and 51 of the catches. Thespring 26 is by that time extended. hen the shuttle 5 has travelled partof its way, the cam 40 is rotated and thereby the lever 35 is movedrearwardly in such a way that the projection 32 releases the picking rod21 and the auxiliary shuttle 12 is thrown to the rear end of its shuttlerace 8 where it is received in the'box 11 and held therein by means ofthe spring 55. The thread 13of the auxiliary shuttle 12 Which isincorporated in the selvage, then lies eX- tended across the path of themain shuttle 5 which passes over this thread, so that the two weftthreads 61 are both above the looking thread 13.

The lay 1 is now moved forward, so that the double weft thread istemporarily beaten up and the front picking rod 21 is pushed behind theprojection .32 by the projection 58 of the lay 1, whereas the spring 26is again extended. The two weft threads 61, by the forward movement ofthe lay 1 are spread by the .projections56. and 57 whereas through themedium of the cam 41, the lever L6, the chain 49 and the catch 30, thepicking rod 22 is simultaneously released, so that the auxiliary shuttle12 is thrown forward and passes between the two weft threads 61. Duringthe return movement of the lay 1 the rear picking rod 22 is again pushedbehind the projection of the catch 30 and the spring 26 is extended. Onaccount of the fact that the auxiliary shuttle has been passed betweenthe two weft threads 61, the thread 13 of the auxiliary shuttle islooped around the lower weft thread so that when the main shuttle 5,during the return movement of the lay, is returned to the feed side ofthe loom, said lower thread is locked and the main shuttle 5 moves alongthe upper weft thread, which thereby is drawn loose from theapexof thelease. During the subsequent forward movement of the main lay thedoubleweft thread is definitely beaten up, whereupon the lease is changed. Allparts are then in their initial position, so that a new series of movements may be started.

Owing to the fact that the main shuttle according to the invention is,provided with a longitudinal slot instead of a bore for the weft thread,there is the advantage that,

when the main shuttle is in the left hand box, as shown in dotted linesin Fig. 1', the weft thread which in this case lies in the right handextremity of the slot, also on account of the relatively great length ofthe main shuttle, only forms a short loop and need not pass through thebox to the left hand extremity of the shuttle. This prevents the threadsfrom getting entangled in the box at the beginning of the next-movementof the main shuttle. Moreover on account of the fact that the slot isnot in the middle of the shuttle, but lies near the front edge thereof,the weft thread at the beginning of the next movement of the shuttle, isprevented from lying at the wrong side thereof, which would cause theformation of a turn in the thread.

What I claim is:

1. In a continuous Weft loom, a shuttle of the character described,characterized by the shuttle and substantially over the total lengththereof.

2. In a continuous weft loom, a shuttle as claimed in claim 1,characterized by the fact that the slot is arranged at the front side ofthe vertical longitudinal plane of symmetry of the shuttle.

3. In a continuous Weft loom, a shuttle provided with a thread-carryingslot extend-t ed through the entire width of the body of the shuttle andover a major portion of the length thereof.

4. A shuttle as claimed in claim 3, characterized by the fact that theslot is arranged at the front side of the vertical longitudinal plane ofsymmetry of the shuttle.

5. In a continuous weft loom, a shuttl provided with a thread-carryingslot extending through the entire width of the body of the shuttle andover about two-thirds of the length thereof. 7

In testimony whereof I affix my signature.

EASTMAN CARE]. AUGUST VORSTER.

Certificate of Correction.

It is hereby certified that the name of the assignee Soetman in LettersPatent No. 1,567 ,879, granted December 29, 1925, upon the applicationof Bastiaan Carel August Vorster, of Amsterdam, Netherlands, for animprovement in Looms, Was erroneously written and printed as Soltman,Whereas said name should have been written and printed as Soetman, asshown by the records of assignments in this oflice; page 2, line 40, forthe word shutter read shuttle; and that the said Letters Patent shouldbe read With these corrections therein that the same may conform to therecord of the case in the Patent Office.

Signed and sealed this 23d day of March, A. D. 1926.

[SEAL-1 M. J. MOORE,

Acting Oawwnissz'oner of Patents.

